feat: implement server with background jobs and resume when all answers are provided

[grabbou]

This implements #2 and #9 (please confirm)

Updated server to use latest API
Workflow now runs on the server in the background until it requests a tool or finishes
Removed saving/loading from file as we want to keep state in memory and run its updates in background. Previous example required calling "iterate" endpoint each time to advance it. We can always add it back, but I think this one is much better
Will automatically resume when all answers are provided
Logger UI

Once this gets accepted, I will go ahead and create reusable functions to reduce this boilerplate and hide abstraction.

[grabbou]

API Interaction Log

Initial Visit Creation

Request:

curl -X POST http://localhost:3000/visits

Response:

{
  "id": "303c8292-3f74-47b8-ae4f-4fd7b3c9381a",
  "status": "idle"
}

---

Fetch Visit Details (1st Call)

Request:

curl -X GET http://localhost:3000/visits/303c8292-3f74-47b8-ae4f-4fd7b3c9381a

Response:

 [
  {
    "id": "call_g1unTqAlrGHTJTv2lLnoBpc5",
    "type": "function",
    "function": {
      "name": "askPatient",
      "arguments": "{\"query\":\"Could you describe the specific symptoms the patient is currently experiencing?\"}",
      "parsed_arguments": {
        "query": "Could you describe the specific symptoms the patient is currently experiencing?"
      }
    }
  }
]

---

Tool Call Response Submission

Request:

curl -X POST http://localhost:3000/visits/303c8292-3f74-47b8-ae4f-4fd7b3c9381a/messages \
  -H "Content-Type: application/json" \
  -d '{"tool_call_id":"call_g1unTqAlrGHTJTv2lLnoBpc5","content":"I am good"}'

Response:

{
  "hasAllToolCalls": true
}

---

Fetch Visit Details (2nd Call)

Request:

curl -X GET http://localhost:3000/visits/303c8292-3f74-47b8-ae4f-4fd7b3c9381a

Response:

[
  {
    "id": "call_IyAYIOUTPaRkoWeNLQm8Jdig",
    "type": "function",
    "function": {
      "name": "askPatient",
      "arguments": "{\"query\":\"Is the patient experiencing any pain or discomfort in any part of their body?\"}",
      "parsed_arguments": {
        "query": "Is the patient experiencing any pain or discomfort in any part of their body?"
      }
    }
  }
]

[pkarw]

Cool, approved.